I am trying to apply access to Premium APIs, but whenever I click “Apply for Premium access”, it always showed to me that " The email address associated with this Twitter @username is not verified. You must add a valid email address and verify it prior to applying for developer access." I still try to use the button “add a valid email address”, but it was not working. I registered another account to access, but same problem. Anyone could give me some suggestion, really appreciate. Now I even can’t start, both on free and paid Premium.
Thank you very much